Random vibration in ANSYS APDL using results from Linear Perturbation

[davesmith12]

I would like to analyze the random vibration of a transversely excited beam that is subjected to a static load. I am using a PSD analysis. I was able to conduct Linear Perturbation to determine the natural frequencies and mode shapes of the pre-stresses beam. However, when I attempt to run the PSD analysis, I am getting the error: RST file is not from a modal analysis.

I understand that the modal information is logged in the RSTP file. Is there any way to work around this in APDL to run the PSD analysis?

 

[hacksaw]

There are some versions of ANSYS that can help you